uxcell M4 x 7mm L x 6mm OD Brass Knurled Insert Nuts (60 Pcs) | Heat Set Embedment Nut for 3D Printing

• SIZE — Thread Dia: M4; Pitch: 0.7mm; Overall Size: 6mm x 7mm / 0.24" x 0.28"(OD*L)
• MATERIAL — Made of brass material, high hardness and durable. Provides good mechanical properties with increased corrosion and heat resistance
• FEATURE — The embedding nut has a guide so there is no need for a counterbore or countersink. Smooth surface, firm and uniform, easy to install.
• ADVANTAGE — Due to the embossing process on the outer diameter of the insert, it forms certain friction and bites force with the brass insert after forming, which can be fixed on the inside so that it will not fall off easily. Has a certain torsion and tension.
• APPLICATION — Can be installed by ultrasonic or heat into the plastic matrix, or formed during the injection, widely used in 3D printing injection molding to achieve tight fixation.

• Prepare the Plastic Component — Drill or create a hole in your plastic or 3D printed part that matches the outer diameter of the insert nut (6mm OD). Ensure the hole is clean and free of debris for optimal embedding.
• Embed the Insert Nut — Using a heat-set tool, soldering iron (with appropriate tip), or ultrasonic welder, carefully apply heat or vibration to the insert nut. Press it into the prepared hole until it is flush with the surface.
• Allow to Cool and Secure — Once embedded, allow the plastic to cool completely. The brass insert will contract slightly, and the knurled exterior will bite into the plastic, creating a strong, permanent thread with excellent torsion and tension resistance.

Typical situations where uxcell M4 x 7mm L x 6mm OD Brass Knurled Insert Nuts (60 Pcs) | Heat Set Embedment Nut for 3D Printing helps — illustrative scenarios, not customer reviews.